UPC305 - NEC

UPC305 POSITIVE VOLTAGE STABILIZED POWER SUPPLY

The µPC305 is a high-performance stabilized power supply that can supply a constant voltage in a wide temperature range even if the input voltage or load voltage fluctuates, by integrating a high-gain error amplifier and a temperature-compensating constant-voltage diode on a single chip. FEATURES • Wide output voltage variable range Vo: 4.5 to 30 V, VDIF: 3.

Features

• Wide output voltage variable range Vo: 4.5 to 30 V, VDIF: 3 to 30 V
• Excellent load stability
• Good ripple rejection ratio 0.02% 0.003%/V PIN CONFIGURATION (Top View) µ PC305C, 305G2 Current limiter 1 Current output 2 Input 3 GND 4 8 Output 7 Compensation 6 Error detection 5 Reference voltage ORDERING INFORMATION Part Number Package 8-pin plastic DIP (7.62 mm (300)) 8-pin plastic SOP (5.72 mm (225)) µPC305C µPC305G2 EQUIVALENT CIRCUIT R7 2.8 kΩ Q12 Q11 Q10 Q9 Q7 Q8 D1 R4 3 kΩ R3 6.8 kΩ Q18 R2 3 kΩ Q1 Q2 C1 5 pF Q6 R6 4.4 kΩ Q5 Q13 R8 1.86 kΩ Q16 Q14 Q15 R9 1.32 kΩ 1 8 7 Current limiter.